Roller-protector for printing-presses.



PATENTED JULY 3 o. L. MATHESONK: T. M. DALE. ROLLER PROTECTOR FOR PRINTING PRESSES.

APPLICATION FILED JUNE 10, 1905.

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Witnesses:

Attorneys.

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' 0. L. MATHESON & T. M. DALE.

ROLLER PROTECTOR FOR PRINTING PRESSES.

- APPLICATION FILED JUNE 10.1005.

PATENTED JULY 3, 1906.

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UNITED STATES PATENT oiurroir.

CARL L. MATHESON AND THOMAS M. DALE, OF STATESVILLE, NORTH CAROLINA.

ROLLER-PROTECTOR FOR PRlNTlNG-PRESSES.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed June 10,1905. Serial No. 264,653.

To all whom it may concern.-

Be it known that we, CARL L. MATHESON and THOMAS M. DALE citizens of the United States, residing at Statesville, in the county of Iredell and State of North Carolina, have invented a new and useful Roller-Protector for Printing-Presses, of which the following 1s a specification This invention relates to roller-protectors for printing-presses.

The object of the invention is in a ready and practical manner to protect the inkingrollers when used more particularly with ruled-form work against being cut or pitted by the lead-lines as the rollers pass beyond the lower end of the ruled form, whereby the loss entailed upon printers from this cause shall be positively obviated.

With the above and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel construction and combination of parts of a roller-protector for printing-presses, as will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which like characters of reference indicate corresponding parts, Figure 1 is a view in perspective of the device as it appears when ready for use. Fig. 2 is a view in elevation With one side of the protector removed. Fig. 3 is a view in transverse section, taken on the line 3 3 of Fig. 2. Fig. 4 is a similar view taken on the line 4 4 of Fig. 2. Fig. 5 is a view in perspective, exhibiting the manner in which the device of the present invention operates to produce the results described. 1

Referring to the drawings, 1 designates the casing or stock of the protector, which may be made of any suitable material and of any desired length. The casing embodies a main section 2 and a detachable section 3, the two sections being held assembled by screws 4, of which there may be any number, three in this instance being shown. The main section 2 is provided intermediate of its ends with a boss 5, which, by preference, will be made integral with the bottom of the section. As herein shown, but one boss or brace 5 is employed; but where the protector is of comparatively great length two or more may be utilized, and as this will be readily apparent detailed illustration of such obvious modification is deemed unnecessary.

Arranged within the casing is a plunger 6, which is practically commensurate in length with that of the inner diameter of the casing and is provided intermediate of its ends with a reduced portion 7 to fit over the boss 5, the recess formed by said portion being of greater length than the boss in order to provide space to receive two approximately V-shaped s rings 8, the bends of which rest against the shoulders formed by the boss, while the end of one member of each of the springs is disposed in the path of the shoulders 9, formed by the reduced portion 7, whereby the said springs are positively held against longitudinal movement relatively to the casing. In order to permit the springs to project the plunger above the u per face of the casing, the former is provi ed with a plurality of transverse slots 10in this instance two which are disposed in the end portions of the .plunger and receive pins 11, extending transversely through the casing, as clearly shown in Fig. 4. By the employment of the slots the plunger will be caused to move at right angles to the length of the casing without tilting or binding, and by the employment of the springs 8 it will always be caused to project above the upper face of the casing.

In Fig. 5 there is illustrated the manner in which the grippers cooperate with the rollerprotector. In this view, 12 designates a platen of the usual or any preferred construction; 13, the form or type bed; 14, the grippers, which operate in the usual manner common to presses of the character shown; 15, a chase; 16, a ruled form locked in the chase by the usual furniture 17 and quoins 18, and 1 the rotector that is locked up in the chase with t e ruled form. The plunger is type-high and is sufficiently longer than the form or job to present at least a half of an inch projecting beyond each end thereof, which projecting portions are engaged by the grippers when the platen approaches the form and forces the plun or into the casing before the impression is taken, thereby positively precluding any smudging of the work. It will be seen that instead of the rollers strikin upon the sharp edges of the rules, which will inevitably pit and cut them, that they will strike a straight yielding surface and thence pass on to the printing-form without jar or impact, resulting thereby in the even distribution of the ink and. at the same time the positive protection of the rollers against injury.

WVhile in general it will be preferred to make the casing and plunger of metal, it is to be understood that the invention is not to be limited to these materials alone, as any other substance or substances adapted for the purpose may be employed in lieu thereof.

Having thus describedthe invention, what 1s claimed is 1. A roller-protector for printing-presses embodying a casing or holder and a typehlgh elastically yieldable plunger carried thereby.

2. A roller-protector for printing-presses embodying a casing or holder and a springpressed type-high member carried thereby.

3. A roller-protector for printing-presses embodying a casing or holder and a yielding spring-pressed member projecting beyond one face thereof.

4. A roller-protector for printing-presses embodying a casing provided intermediate of its ends with a boss, a plunger arranged within the casing and having an intermediate cut-away portion to bridge the boss, springs housed by the casing and bearing against the inner side of the plunger, and means for limiting the movement of the plunger relatively to the casing.

5. A roller-protector for printing-presses comprising a casing provided intermediate of its ends with a boss, a plunger arranged in the casing and having an intermediate recess to straddle the boss, springs interposed between the terminals of the boss and the shoulders formed by the recess, and operating normally to hold the plunger above the outer face of the plunger, and. means for limiting the movement ofthe plunger relatively to the casing.

6. A roller-protector for printing-presses comprising a casing, a spring-pressed plunger arranged therein and provided with transverse slots, and. pins passing through the casing and through the slots to limit the outward movement of the plunger.

7. In a printing-press, the combination with a chase, of a sheet-gripper-actuated roller-protector.

8. In a printing-press, the combination with a chase of a roller-protector embodylng a spring-pressed plunger adapted to be oper-' ated by the grippers.

9. In a printing-press, the combination with the chase and the grippers, of a roller-protector having its operative face typ e-high and its terminals disposed in the path of movement of the grippers.

10. In a printing-press, the combination with the chase and the grippers, of a roller-pro tector embodying a spring-pressed type-high plunger disposed in the path of travel of the grippers.

11. A printing-press provided with a typehigh inking-roller protector disposed in substantial parallelism with the roller and in the path thereof.

12. A rinting-press having a type-high inking-r0 ler protector dis osed in substan tial parallelism with the roller across one end of a form and in the path of the roller.

13. A form of type having a type-high roller-protector disposed across one end of the form and. of a length at least equal to that of the adjacent end of the form.

14. A form of type having an elasticallyyieldable type-high roller-protector disposed across the inner end of the form and of a length at least equal to that of the adjacent end of the form.

15. A form of type including rules leading inwardly from one end of the form, and a type-high roller-protector disposed transversely across the ends of the rules.

16. An inking-roller protector for printing presses embodying a frame, a roller-engaging plunger, and a cushioning means normally supporting the plunger type-high.

17. An inking-roller protector for printingpresses embodying a frame, a roller-engaging plunger located in the path of return move ment of the inkin -roller, a cushioning means normally supporting the plunger ty e-high.

In testimony that we claim the 'oregoing as our own we have hereto aflixed our signatures in the presence of two witnesses.

CARL L. MATHESON. THOS. M. DALE. Witnesses:

D. M. ANsLEY, W. G. OULBRETH. 

